Which of the following protists secrete digestive enzymes to break down liveorganisms that they have captured? oa) bacteriaob) amoebaeoc) green algaeod) ciliates

Which of the four major uses is predicted to change the least by 2020?

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.